<style face="normal" font="default" size="100%">Back schools for acute and sub-acute non-specific low-back pain: update of a Cochrane review [abstract]</style>

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3<style face="normal" font="default" size="100%">Back schools for acute and sub-acute non-specific low-back pain: update of a Cochrane review [abstract]</style><style face="normal" font="default" size="100%">Back schools for acute and sub-acute non-specific low-back pain: update of a Cochrane review [abstract]</style>